Hi all .. When I send a register packet to my kamctl, then I using " kamctl ul show "openser" " to see success or not with SIP server , it's response ERROR: domain unknown: use usernames with domain or set default domain in SIP_DOMAIN Do I have defind SIP_DOMAIN in /usr/local/etc/kamailio/ kamctlrc ? SIP_DOMAIN is mean IP that install kamctl ? Any help would be greatly appreciated Thanks & regards, Andre